Tissue anchors and percutaneous tricuspid valve repair using a tissue anchor
View Patent ↗The present teachings provide devices and methods of treating a tricuspid valve regurgitation. Specifically, one aspect of the present teachings provides devices and methods of identifying a suitable location on the tricuspid annulus, placing a wire across the tricuspid annulus at such an identified location, deploying a tissue anchor across such an identified location, deploying two or more tissue anchors and coupling the tissue anchors with a flexible tensioning member, and applying tension to a flexible tensioning member that is coupled with the two or more tissue anchors, plicating tissues between each pair of the two or more tissue anchors, and reducing the circumference of the tricuspid annuls. As a result, a regurgitation jet is reduced or eliminated.
1. A method comprising:
locating a first location near a heart valve annulus;
advancing a tissue anchor delivery catheter to the first location, wherein the tissue anchor delivery catheter includes a deflectable tissue anchor holder that extends axially and longitudinally along an exterior of a shaft of the tissue anchor delivery catheter, the tissue anchor holder having a first end fixed to the shaft and an opposite free second end that is located distal to the first end, the second end of the tissue anchor holder configured to move radially outward from the shaft;
capturing a first tissue anchor on the tissue anchor holder and deploying a distal portion of a first tissue anchor across the heart valve annulus at the first location;
deploying a proximal portion of the first tissue anchor at the first location;
locating a second location near the heart valve annulus;
capturing a second tissue anchor on the tissue anchor holder and deploying a distal portion of a second tissue anchor across the heart valve annulus at the second location;
deploying a proximal portion of the second tissue anchor at the second location;
wherein the first tissue anchor and the second tissue anchor are connected with a continuous portion of a flexible tensioning member; and
changing a distance between the first and second tissue anchors.
2. The method of claim 1 , wherein at least one of the first and the second locations is on a tricuspid annulus.
3. The method of claim 2 comprising advancing a locating wire across the tricuspid annulus.
4. The method of claim 3 wherein the locating wire crosses the tricuspid annulus from right atrium to right ventricle.
5. The method of claim 3 wherein the locating wire crosses the tricuspid annulus from right ventricle to right atrium.
6. The method of claim 5 comprising capturing and pulling a distal end of the locating wire outside of the body.
7. The method of claim 3 comprising advancing a tissue anchor delivery catheter along the wire to the first location.
8. The method of claim 1 , wherein the locating of the second location is after the deployment of the first tissue anchor.
9. The method of claim 1 , wherein the locating of the second location is prior to the deployment of the first tissue anchor.
10. A method comprising:
positioning a tissue anchor delivery catheter at a first location near a heart valve annulus, wherein the tissue anchor delivery catheter carries a plurality of tissue anchors;
advancing a distal portion of a first tissue anchor outside of the tissue anchor delivery catheter across the annulus of the heart valve at the first location;
deploying the distal portion of the first tissue anchor;
advancing a proximal portion of the first tissue anchor outside of the tissue anchor delivery catheter at the first location;
deploying the proximal portion of the first tissue anchor;
positioning the tissue anchor delivery catheter at a second location near the heart valve annulus,
advancing a distal portion of a second tissue anchor outside of the tissue anchor delivery catheter across the annulus of the heart valve at the second location;
deploying the distal portion of the second tissue anchor;
advancing a proximal portion of the second tissue anchor outside of the tissue anchor delivery catheter at the second location;
deploying the proximal portion of the second tissue anchor;
wherein the first and second tissue anchors are connected with a continuous portion of a flexible tensioning member; and
reducing a distance between the first and second tissue anchors;
wherein the distal portions of the first and second tissue anchors are advanced outside of the tissue anchor delivery catheter by a delivery system pulling on the distal portions of the first and second tissue anchors.
11. The method of claim 10 , wherein the distal portion of the first and second tissue anchor is deployed inside the right atrium.
12. The method of claim 10 , wherein the distal portion of the first and second tissue anchor is deployed inside the right ventricle.
13. The method of claim 10 further comprising locking the distance between the first and second tissue anchors.
14. A method comprising:
locating a first location near a heart valve annulus;
advancing a locating wire across a tricuspid annulus;
advancing a tissue anchor delivery catheter along the wire to the first location
deploying a distal portion of a first tissue anchor across the heart valve annulus at the first location;
deploying a proximal portion of the first tissue anchor at the first location;
locating a second location near the heart valve annulus;
deploying a distal portion of a second tissue anchor across the heart valve annulus at the second location;
deploying a proximal portion of the second tissue anchor at the second location;
wherein the first tissue anchor and the second tissue anchor are connected with a continuous portion of a flexible tensioning member; and
changing a distance between the first and second tissue anchors;
wherein at least one of the first and the second locations is on the tricuspid annulus;
wherein the tissue anchor delivery catheter comprises an elongated shaft with a tissue holder protruding outwardly and extending longitudinally along an outer surface of the elongated shaft, the tissue holder is a cantilevered structure with a free end that receives the first tissue anchor.
15. The method of claim 14 , wherein a first portion of the first tissue anchor extends along the tissue holder and a second portion of the first tissue anchor extends along the outer surface of the elongated shaft proximal to an attachment point of the tissue holder to the elongated shaft.
16. The method of claim 14 , wherein the elongated shaft includes a pair of spaced visualization markers, the tissue holder being disposed between the pair of spaced visualization markers.
17. The method of claim 14 , wherein the free end of the tissue holder is located distal to an attachment point at which the tissue holder is attached to the elongated shaft.
18. The method of claim 14 , wherein the tissue holder is configured to deflect radially outward from the elongated shaft.
19. The method of claim 14 , wherein the tissue holder is configured to move between a first position and a second position, wherein in the first position, the tissue holder is free of the first tissue anchor and the free end assumes a radially inward position relative to the elongated shaft and wherein in the second position, the first tissue anchor is captured by the tissue holder which deflected radially outward and the free end is spaced radially from the elongated shaft.